Process of regulating combustion.



G W. PARKER.

PROCESS OF REGULATING COMBUSTION.

APPLICATION FILED DEC. 9, 1909.

134 Patented July 1914.

2 SHEBTS-BHBET l.

W W (J M v u/wl oc G. W. PARKER.

PROCESS OF REGULATING COMBUSTION.

APPLIOATION FILED DI10.9, 1909.

Patented July 21, 1914 2 SHEETS-SHEET 2.

STATES PATENT oFFIoE.

eaoaea w. PARKER, or NEW roan, N; Y-., assrenoa 'ro THE rknxnarnossnnn MINING & manorac'ruame comrahr, or errouts, mssormr, A conrom- TEGN OE EZZSSOURI.

PROCESS OF REGULQTING COMBUSTION.

Specification of Letters Pate'nt.

Patented Jul 21, 1am.

firiginal application fll'ed time 10, 1909, Serial 1%. 482,351. niviaaana this application aia December 9,1909. scheme. 532,168.

To all whom it may concern:

Be it known that I, Gaouor. W. PARKER, a citizen of the United States, residing at New York city, in the county of New lo'rk and State of New York, have invented certain new and useful Improvements. in Processes of Regulating Combustion, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to improvements in processes of regulating the combustion of fuel in a furnace and particularly to the regulation of the combustion of fuel in gas producers; and an object of my invention is to provide a process of the character described which will. be simple and exceedingly citieieut in the accomplishment of the purpose for which it is-i'ntended.

Heretofore it has been common to introduoe wet steam under the grate-bars of gas prodhcer furnaces; but the use of wet steam results in the saturation of the fuel on the grate-bars, particularly at the front part thereof and this saturated fuel falls into the ash pit and is wasted.

In carrying out my process, I provide means for introducing superheated steam or steam gas in conjunction with carbon dioxid.

Free oxygen may also be introduced with the two gases jg'st named, practically in the form of air. The carbon dioxid will in practice be obtained in the form of waste gases from the recuperatorfines of the gas-producer furnace. The. amount of air, waste-. gas and superheated steam or steam gas will be regulated aud'measure'd; and the supply of any one or more of these gases may be entirely cut off at will. By introducing superheated steam the saturation of the fuel upon or near the grate-bars is avoided; for, the steam is so will remain in the form of steam-gas, even after it comes in contact. with the relatively cold surface presented by the gratobars and the bottom of the fuel bed resting thereon. Hence, by the use of superheated steam, the tire will be kept alive down to even the grate-bars.

In carrying out my new process, the current of superheated steam is introduced be low the grate bars and flows up through the fuel-bed, by the heatof which it is dissociated or resolved into its component gases,

highly superheated that it.

hydrogen and oxygen, whereby h'eat is drawn from the bed of fuel, the temperature. of which is thereby kept under control. The current of steam gas may be used to inject a quantity of carbon dioxid gas in the form of waste gases The waste gases may, if desired,-be mixed with free oxygen in the form of air. The carbon dioxid gas in passing through the bed of fuel will be reduced to carbon monoxid; and this endothermic reaction will result in reducing the temperature of th'e'he'd of fuel, just as the same result is obtained by the endothermic reaction which results in the dissociation of the steam gas;

In the drawings illustrating the principle of my invention and the best mode now known to me of applying that principle. Figure l is a longitudinal vertical section of so much of ages-producer furnace as is nec:

essary to illustrate an apparatus for carryiug out my invention; Fig. 2 is a transverse vertical section of the gas producer furnace shown in Fig. 1; and Figs. 3 and 4; are views similar to Figs. 1 and 2, respectively, but illustrating a m'odifieid form of apparatus for carrying out my invention.

'The fuel-bed n, is supported upon the gratediiars 72 and coal is introduced through the throat 0. Into one of the waste-gas flues IZ extends the inner open end of a gas'pipe c, the lower end of which is joined by the T-conne'ction f with the mixing-pipe g and through which flows a part of the waste gases. Another part of the waste gases flows through the waste-gas flue 0 in -a manner well known to all skilled in this art. Thus, there are formed two streams of waste gases, one. flowing through the pipe 0 and thelother through the flue o. The air-pipe h curves downwardly at its upper end i and at its lower end is joined'by the T-conuection f to the mixing-pipe g. In each of the pipes e, g, h, there is mounted a valve j which serves to control the flow of the particular gas which passes through the pipe in which it is mounted. In each of the pipes e, it, there is fitted a meter 7.: which controls and regu lates the amount of air or other gas which may pass through the pipe; and the meter is may be of the form shown and described in the patent granted Qharles E. Sargent, him-729,511, May 26, 1903. The mixing-pipe 9' connects at its lower end with the outer end m oi the heating coil n, which 1185 in one of the waste gas fiucs near the bottom of the furnace. Thus; the mixture flowing through the coil a is made to traverse a helical. path and, While it is passing through the coil, it absorbs heat or heat is transferred to it from the stream of Waste gases flowing through the flue 0. The path of the stream flowing through the coil n being Winding,

this stream is subjected to the action of the heat of the other stream or that through the flue 0 a longer time than if the pipe n were straight. Moreover, the coil it lies Within the stream passing through the flue 0, an arrangement which is favorable to the absorption of heat by the stream passing through it. The inner end of the heating coil n is in the form of a nozzle p, having perforations g for the egress of the gas. A I

steam-piper is fitted with a valve j and a -meter k and is provided with a nozzle 8 which extends into the outer end m of the heating coil Through the pipe r flows:

superheated steam or steam gas which serves as an in ector to carry the mixture of Waste gas and air from the mixing pipe g through the heating coil n and the nozzle ;0. By passing the air, waste gases and steam gas through the Winding path or coil, a thorough mixing of these gases, as. Well as a more effectual heating thereof, is obtained.

In Figs. 3 and 4,-the mixing pipe 9 is connected with the outer end m of the heating i coil a; but the nozzle 8' of the steam pipe 1" extends into and connects with the inner end of the heating coil a. The nozzle .7) of the latter is mounted free to swing upon the hinge-joint 25, whereby the end of the nozzle may be dipped into the Water u in the ash-pit e, if it be desired at any time ,to condense the steam and to cool the gases passing through the nozzle 10 beforetheir entrance into the furnace through the grate. The depth of the fuel-bed a is so great as to insure that the endothermic reaction re ferred to above shall take place; that is,"it is What is commonly known as a deep fuel-bed. By means of the meters it; the flow of the steam gas, Waste gas and air may be separately regulated and controlled so as to regulate the combustion of the fuel.

This application is filed as a divisional application under my pending application of combustion arising from a deep bed of fuel; dividing said products into a plurality of streams; mixing air and steam With'one of said streams; controlling the proportions in which the constituents of said mixture cuter therein; leading the mixture thus formed in a Winding path through the other of said streams and thereby heating the mixture; and discharging the heated mixture into said deep bed of fuel.

A process for, regulating the combustion of fuel consisting in collecting products of combustion arising from a deep bed of fuel; dividing said products into a plurality of streams; mixing air with one, of saidstreams; transferring to the mixture thus formed heat from theother of said streams by passing one of said streams over the other and thereby heating the mixture; in-

troducing steam into said mixture; and dis- I charging the latterinto said deep bed of fuel.

my hand at said New York city this eighth In testimony whereof I have hereuntoset day of'December, A. D., 1909, in the pres-"- .ence of the two undersigned Witnesses.

' G. W. PARKER. Witnesses:

E. I. MCCARTHY; 7 JAMEs HAMILTON. 

